Bucket.



H. S. ATKINSON.

BUCKET.

APPLICATION FILED DEC. 16. I909.

1, 1 38,6 1 4;. Patented May 11, 1915.

' 6 SHEETS-SHEET I.

//Vl/ENTOr? WWW 7714mm ATTORNEYS THE NORRIS PETERS C0. PHOTO-LITHO..WASHINGTDN, D. C.

s. ATKINSON.

BUCKET.

APPLICATION men 05c. 16. 1 909.

Patented May 11, 1915,-

6 SHEETS-SHEET 2- W/ NE SE8 l/VVE/VTOH BY I l a M W comyu O 4 ATTORNEVSTHE NORRIS PETERS 50.. FHOTO-LITHQ, WASHINGTON, D. a

H. S. ATKINSON.

BUCKET.

. APPLICATION FILED mac. 16, 1909.

1,13,614. Patented May 11, 1915.

6 SHEETS-SHEET 3.

ATTORNEYS THE NORRIS PETERS 50.. PHom-LITHQ. WASHINGTON. D. C.

H. S. ATKINSON.

BUCKET.

APPLICATION FILED DEC. 16. 1909.

6 SHEETS-SHEET 4.

INVENTOI? W J M Br 777%0107144/ 777aulowql P- ATTORNEYS THE NORRISPETERS 60.. F'HOTD-LITHQ. WASHINGTON. D. C.

H. S. ATKINSON.

BUCKET.

APPLICATION FILED DEC. 16, 1909.

1,138,614. Patented May11,1915.

6 SHEETS-SHEET 5.

NI-Mil INVE/VTUR THE NORRIS PETERS 0a. PHOTO-H1110" WASHINGTUN, D- C.

H. S. ATKINSON.

BUCKET.

APPLICATION FILED 05c. 16. 1909.

Patented May 11, 1915.

6 SHEETS-SHEET 6- llll llllll IIVVENTOR zyfijkfi W 51 BY ATTORNEYStiniran enemas rarnnr @FFTQE.

HERBERT S. ATKINSON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE HAYWARDCOMPANY, OF NEW YORK, N. Y., A CORPORATION.

BUCKET.

Specification of Letters Patent.

Patented May ii, 1915.

Application filed December 16, 1909. Serial No. 533,363.

To all whom it may concern:

Be it known that I,HERBERT S. ATKINSON, a citizen of the United States,and a resident of East Orange, in the county of Essex and State of NewJersey, have invented certain novel and useful Improvements in Buckets,of which the following is a specification.

This invention relates to improvements in buckets of the class employedin excavating, dredging, hoisting and conveying, and in the presentinstance I have shown my improvement embodied in a bucket of the typecommonly known as the clamshell bucket.

In carrying out my invention it is my purpose to provide a bucketcapable of making long cuts in the material to be handled th s being adesired factor when the material is densely packed and heavy, such asiron ore, compact sand or the like.

A further object of my inventlon is to provide a bucket embodying thedesired features of durability and strength, the parts and elements ofthe bucket being so corelated and arranged that the entire mechanism ismaintained in alinement, and the strains evenly distributed throughoutthe bucket.

The invention consists in the construction, combination and arrangementof parts set forth in and falling within scope of the appended claims.

In the accompanying drawings, Figure 1 is a side view of a bucketembodying my improvements, the open position of the shells or bowlsections being illustrated in dotted lines; Fig. 2 is an end view of thebucket shown in Fig. 1; Fig. 3 is an enlarged detail view of the movablesheave casing arranged in the lower center of the bucket; Fig. d is atop view of the same; Fig. 5 is an enlarged detail view in elevation ofthe sheave casing and sheave at the upper portion or head of the bucket;Fig. 6 is a top view of the same, also showing the manner of joining theside connecting-arms to the head casting; Fig. 7 is an enlarged detailend view of the movable sheave casting, showing the connection of theside arms of the bucket thereto; Fig. 8 is a detail view, partly insection, of one form of rope thimble used in connection with myinvention; Fig. 9 is a sectional view showing the manner of connectingthe lower ends of the side rods to the bowl sections.

In the bucket shown herein, two linesor cables are employed, one beingthe hoisting line for supporting, and raising and lowering the bucket,and the second, the closing line for closing the bowl sections upon thematerial. In this type of bucket-,the bowl sections are so connected andarranged that the weight of the sections tends to open the bucket. Theclosing of the bucket in this invention, is effected by means of atackle device that is, a series of sheaves arranged in the upper andlower centers of the bucket, so that the closing rope makes a'number ofturns over the sheaves and suflicient power is thus appliedto cause thebucket to dig properly. The center sheave, in the upper center or headof the bucket, takes the bight of thetwo-part holding line so that thebucket can be worked in the bight of the line, thereby balancing thestralns on the ropes and trolley when the bucket is used in connectionwith bridges and cable-ways. bucket to be hoisted and trolleyed at thesame time without employing a compensating device in the operatingmachine.

Referring now to the drawings in detail, 55 indicate the bowl sectionsor shells of the bucket which form the receptacle for the load and alsoact as digging members. These sections are connected to the head orcasting 6 by the connecting rods 7, there being in the present instancefour of such rods, each pivotally connected at one end to the head 6,and at the opposite end pivotally connected to the bowl sections. Themanner of connecting these rods will be described in detail hereafter.The diverging truss-rods 8 are pivctally connected at their upper endsto the head casting and at the lower ends to thegcentral section of thebowl as is shown at 10 indicates as an entirety a movablesheave-carrying casing or frame mounted in what may be termed the lowercenter of the bucket, said casing carrying vertical sleeves 11surrounding the vertical guide bars 12 fast to and depending from thehead casting 6. The manner of securing these guide bars 12 to the headcasting will be readily understood by reference to Figs. 2

This also permits the.

and 5. These bars are preferably tubular,

pins 15 passing through the nuts and bar.

Similarly, nuts 16 are threaded onto the rods below the head casting andsecured by the pin 17. At the lower free ends of the dependingguide-bars 12 I provide heads or stops 18 preferably threaded onto theends of the bars and secured by the cross-pins 19, these stops or headslimiting the downward movement of the sheave casing 10 and consequentlydetermining the extent to which the bucket may open. Each of the bucketsections 5 is provided with an upwardly eX- tending side arm 20pivotally connected as at 21 to the movable sheave casing 10, and 22 arecross braces connecting the arms on the same bowl section. The purposesof these cross braces 22 are not only to give strength to the bucket butalso to give rigidity to the bowl sections, and, in connection with thetruss-rods 8, to retain the opposing bowl sec tions, and side arms inalinement, and this is important, since any departure of these partsfrom their alined positions Wlll result in undue strain and wear on thesheave ropes.

The manner of pivoting the side arms 20 to the sheave casing 10 isclearly shown in Fig. 3, and as each arm is pivoted in the same manner,a description of one will suffice. The movable casing or casting is provided with a transverse bore 23 and the bolt 24, after passing throughthe shouldered collar 25 riveted to the arm, passes into this bore 23and is threaded into the nut 26 lying in the enlargement or recess inthe bore, the bolt being further secured by the pins 27 passing throughthe bolt and the adjacent portion of the casing. When it is desired todisconnect the arm from the casing, the pins 27 are withdrawn, the boltunscrewed from the nut and withdrawn, and the nut then removed by meansof a suitable tool inserted into the hole 28 in the nut, the nut socketor enlarged recess being an open one.

The manner of pivotally connecting the side bars 7 and the brace rods 8to the head of casting 6 is shown in Fig. 5. The terminals or ends ofthe adjacent braces and rods are extended parallel and in contact, andthe flanged bushings 29 have their shanks eX- tended from opposite sidesinto the alining bores in the braces and rods, such bushings forming abearing for the pin 30 extending transversely into the head and securedby cross pin 31. Said bushings are feathered to the said braces and rodsso as to turn therewith, and the pin 30 carries a feather securing itagainst rotation to the head or casting 6. It will of course beunderstood that all four arms and braces may be likewise secured to thehead.

The manner of pivotally connecting the lower end of each connecting rodto the bowl sections is shown in Figs. 2 and 9. Referring to the latterfigure, the end of the rod is perforated or bored transversely andlocated between the bucket lugs 32, 32. 33 is a bushing passing throughthe rod and 34 are bearings fitting into the bucket lugs adjacentto theends of the bushing. The bores of the bushings and bearings are formedwith holes square in cross section, and 35 is a bolt having a squareshank passing through the bearings and bushing and connecting all theparts solidly together, in such manner that they are prevented fromrotating, the bored hole in the end of the connecting rod being madesufiiciently large to permit the connecting rod to work freely on thebushing 36 is a nut on one end of the shank of the bolt, the head at theopposite end of the shank being squared and abutting against theadjacent top edge of the side plate.

Referring now to Figs. 1, 2, 5 and 6, it will be seen that within theupper head casing or casting 6 is mounted the sheave frame 37. Withinthis frame is rotatably mount ed the sheave set indicated as an entiretyby letter X, preferably formed of a plurality of sections, 39, and 41,all mounted on the same shaft, although, if desired, separate shafts andpins may be employed for each sheave section 42 designates the shaft forthe sheave sections or members having its main bearings in the sides ofthe casing 10. The sheave frame 37 is divided longitudinally by thewalls 39 41*, which are centrally bored for the reception of the shaft42. Said walls are secured at their ends to the end portions of theframe 37 and are surmounted by a fair-leader cap 41 having ellipticalopenings 41". These walls separate the sheave sections and, being higherthan the sheaves, not only aid in confining the ropes within the scoreof each individual sheave but also divide the strains occurring in thehead of the bucket, since they serve, at their bored portions asintermediate bearings for the shaft 42. To one end of the shaft 42 issecured an oil cup 43 communicating with the longitudinal oil duct 44extending through the shaft. 45 designates transverse bores within theshaft and through which the lubricant may flow from the longitudinal oilduct to the sheave hearing. The central sheave or section 40 receivesthe bight of the hoisting line a, one end of which line may be securedto the trolley or other siutable point, while the opposite end isconnected to the engine drum in the ordinary manner. The closing line bconnects the sheave set 03 with the sheave set y rotatably mounted inthe movable or sliding casing 10 in the lower center of the frame and isarranged as follows: The sheave set 9', like the sheave set :10, isformed of a plurality of sheave sections or members, 46, 47 and 48,mounted upon the shaft 49, and separated by longitudinally extendingwalls 46", 48, the latter being centrally bored for the reception of theshaft 49 and secured at their ends to the end portions of an inner frame18* secured to the inner side of the casing 10. These walls aid inconfining the rope within the score of each individual sheave and alsodivide the strains occurring in the lower center of the bucket, the sameserving, at their bored portions, as intermediate bearings for the shaft49. The shaft 49 carries at one end. the oil cup 50, communicating withthe longitudinal oil duct 51 within the shaft, small transverse bores orducts 52 through which the lubri cant may pass to the shaft bearings,communicating with the longitudinal duct. 53 and 5 1 are rope thimblesdiagonally mounted on the opposite side of the casing head 6., theconstruction of which thimbles will be described more in detailhereafter.

The closing line passes down through one thimble, say 53, and thencearound the alining section or sheave member 46 of the sheave set it,thence up and around the side sheave member 39 in the top casing, thencedown and around the central member 47 of the sheave set y, thence upwardand over the outside sheave member 42 in the top casing, thence down andaround the outer member 48 of the sheave set 3 and thence up and throughthe rope thimble 54; at the right of the drawing. It will be seen thatthe closing rope and sheave sets as and 11 in the upper and lowercenters of the bucket form a tackle device, the closing rope making anumber of turns to generate sufiicient force to close the bucket.

In Figs. 1, 2, 5 and 6 and secured at its lower end by the nut 55 I haveshown the thimbles 53 and 54 as each comprising a tubular shank 55swiveled in the head casting 6, the head 56 of the thimbles comprisingtwo plates spaced apart and carrying the idler rollers 57 the top edgesof the plates being cut away, as at 58, to automatically guide thesheave to the bend of the rope. The thimbles being free to, swivel, ofcourse turn to accommodate the ropes and to accurately guide the same.

In Fig. 8, I have shown a slightly modified form of thimble, in thiscase the latter being formed to two sections, 59 and 60, the section 59having a tongue 61 fitting in the slot 62 in the section 60. The twosections when placed together form a flaring or bellmouth guide for thereception of the rope, and the thimble when so assembled is secured inposition in the head by means of the set screws 63.

From the above description, taken in connection with the accompanyingdrawings, the construction and operation of my bucket will be readilyunderstood by those skilled in the art. Whon the bucket is open, theparts assume the position shown in dotted lines in Fig. 1, that is tosay, with the bowl sections open, and the sliding or movable lowersheave casing with its complement of sheave members in its lowermostposition and abutting against the stops or' heads at the end of theguide bars 12. The closing rope and tackle is now operated by the en-vgine drum and the jaws or bowl sections are closed and drawn together,the lower central casting and sheaves being drawn upward toward the headcasting. When the bucket is fully closed, both the closing and hoistinglines, through the engine, are operated to hoist the bucket. The bucketis then swung to the point of discharge and the closing line slackenedto discharge the load.

It will of course be understood that the bowl section may be altered asto shape to suit the conditions and class of materials to be handled andthat variation and modification may be made in other respects withoutdeparting from the spirit of the invention or exceeding the scope of theclaims.

What I claim is:

1. A bucket comprising a supportinghead, sheaves mounted in said head,cooperating bowl sections, connecting rods pivotally connected to saidhead and to said bowl sections, guide members depending from andsupported only by the head, a movable sheave casing pivotally connectedto the bowl sections and having recesses to 7 receive said guidemembers, sheaves mounted in said movable casing, and a closing linecooperating with the sheaves in the head and those in the movable casingto raise and lower the latter and thereby open and close the bowlsections.

'2. The combination with a hoisting and supporting line of a bucket ofthe class described, comprising a supporting head, havingan'elongatedopening diagonally disposed, a supporting sheave aroundwhich said hoisting and supporting line is adapted to pass mounted insaid opening, separately rotatable bowl operating sheaves also mountedin said opening, cooperating bowl sections, connecting rods pivotallyconnected to said head and to said bowl sections, guide membersdepending in parallel relation from the head, a movable sheave casing,having portions bored to receive said guide members, arms on said bowlsections pivotally connected to the sides of said casing, bowl operatingsheaves mounted in said casing, said head sheaves being diagonallyarranged in cooperative vertical relation to the bowl operating sheavesin said movable casing, and flexible means cooperating with the sheavesin the head and in the movable casing to open and close the bowlsections.

8. A bucket comprising a supporting head, sheaves mounted in said head,cooperating bowl sections, connecting rods pivotally connected to saidhead and to said bowl sectiens, guide members depending from andsupported only by the head, a sheave casing slidably mounted on saidguide members, sheaves in said casing, side arms rigidly secured to thebowl sections and pivotally connected to the sheave casing, a closingline cooperating with the sheave members in the head and those in themovable casing to raise and lower the latter and thereby open and closethe bowl sections, and means on said guide-members adapted to limit thedownward movement of said sheave casing.

4. Abucket comprising a supporting head, sheaves mounted in said head,cooperating bowl sections, connecting rods pivotally connected to saidhead and to said bowl sections, guide members depending from the headand having their lower ends free, a sheave casing slidably mounted onsaid guide members, sheaves in said casing, side arms rigidly secured tothe bowl sections and pivotally. connected to the sheave casing, bracemembers connecting said arms and divergent truss members connected toeach bowl section and to the bucket head adapted to retain the bowlsections in alinement, and a closing line cooperating with the sheavemembers in the head and those in the movable casing to raise and lowerthe latter and thereby open and close the bowl sections.

5. In combination with a bucket of the class described a supporting-headhaving an opening therein, a sheave casing within said opening andsecured to the head, bored walls dividing said casing and supported attheir ends by the ends of the casing, sheaves within the divisionsformed by said walls, and a shaft passing through said head, walls andsheaves, the bores of said walls acting as a 1 bearing for said shaft.40

6. In combination with a bucket, a sheave casing slidably mounted onsaid bucket, a frame within and secured to said casing, bored wallsdividing said frame and supported at their ends by the ends of saidframe, sheaves within the divisions of said frame, and a shaft passingthrough said casing, frame and sheaves, the bores of said walls actingas a bearing for said shaft.

7. In a bucket of the class described, the combination of a supportinghead, cooperating bowl sections, rods extending between the head and thebowl sections, means for opening and closing said bowl sections, andmeans for pivotally connecting said rods to the head, comprising boredjaws on said head, flanged bushings between said jaws extending fromopposite sides into bores in the ends of the rods and feathered to saidrods, a pin passing through said jaws and through said bushings, andmeans securing the pin in operative position.

8. In a bucket of the class described, the combination with a movablesheave carrying casing mounted in the lower center of the bucket, ofmeans for connecting the side arms of the bucket to said casing, saidmeans comprising a pin extending. through bearings at the ends of saidarms and through a bore in the casing, a nut lying within a recess inthe casing and receiving the shank of the bolt, and a transverse pinsecuring the bolt shank to the casing.

9. In a bucket of the class described, the combination of a supportingbucket head, cooperating bowl sections, connecting rods extendingbetween said head and the bowl sections and means for pivotallyconnecting the ends of said rods to the bowl sections, said meanscomprising a bushing extending into an aperture or bore in the end ofthe connecting rod, lugs at either side of the connecting rod, bearingsextending into said lugs, and a bolt square in cross section connectingthe lugs, bearings and connecting rods, the bores or openings in saidlast mentioned parts being square to accommodate said bolt.

10. In a bucket, the combination of a supporting bucket head, pivotedbowl sections, means for opening and closing said sections, including aline, and thimbles for said line comprising a tubular shank memberswiveled in the bucket head, a frame carried by said shank member havingat its upper portion an opening, and a plurality of idlers within saidframe, said frame including means thereon adapted, by contact with saidline, to deflect said frame into proper lineguiding position in anyoperating position assumed by the bucket.

11. In a bucket, the combination of a supporting bucket head, pivotedbowl sections, means for opening and closing said sections,

including a line, and a thimble for said line comprising a tubular shankmember pivotally mounted within the supporting head, a frame carried bysaid member and a plurality of idlers mounted within said frame, saidframe having a part thereof extending upwardly above said idlers,whereby, when said line contacts with said part, said frame is deflectedinto proper line-guiding position in any operating position of thebucket.

12. In a bucket, the combination of a supporting bucket head, pivotedbowl sections, means for opening and closing said sections, including aline, and a thimble for said line comprising a rotatable tubular shankdisposed through an opening in the head, a frame carried by said shankhaving at its upper portion an opening and a plurality of idlers carriedby said frame, said frame being provided with downwardly divergingcurved upper surfaces.

13. In a bucket, the combination of a supporting bucket head, pivotedbowl sections, means for opening and closing said sections, including aline, and a thimble for said line comprising a rotatable tubular shankdisposed through an opening in the head, a

frame carried by said shank, having at its upper portion an opening anda plurality of idlers carried by said frame disposed on approximatelythe same horizontal plane and rotating on horizontal axes, said framebeing provided with curved downwardly diverging upper surfaces.

1 1. A bucket of the kind described comprising a supporting-head,sheaves rotatably mounted in said head, coiiperating load-trays, linkspivotally connected to said head and to said trays, guide membersdepending from said head, a frame pivotally connected to said trays andprovided with portions fitting on said guide members, sheaves rotatablymounted in said frame, and flexible means adapted to cooperate with saidhead and frame sheaves to raise and lower said frame to close and opensaid trays, said frame being adapted to slide below said head on saidguide members on the opening and closing of said trays; substantially asdescribed.

15. A bucket of the kind described comprising a supporting-head,cooperating load-trays adapted to open and close pivotally connected tosaid head, independently rotatable sheaves mounted in said head, rodsdepending from said head, a box-shaped casting pivotally connected tosaid trays and provided with bored portions fitting on said rods,independently rotatable sheaves arranged in said casting, and flexiblemeans adapted to cooperate with said sheaves to raise and lower saidcasting to close and open said trays, said casting being adapted toslide on said rods on the opening and closing of said trays;substantially as described.

16. A bucket of the kind described comprising a supporting-head,cooperating load-trays, links pivotally connected to said head and saidtrays, rods depending from said head, a box-shaped casting provided withbored portions fitting onsaid rods, arms fixedly mounted on said trayspivotally connected to the sides of said casting, independentlyrotatable sheaves mounted in said head, independently rotatable sheavesarranged in said casting, and flexible means adapted to cooperate withsaid sheaves to raise and lower said casting to close and opensaidtrays, said casting being adapted to slide on said rods on theopening and closing of said trays; substantially as described.

17. A bucket of the kind described comprising a supporting-head,cooperating load-trays, links pivotally connected to said head and tosaid trays,rods depending in parallel relation from said head, aboxshaped casting provided with bored por- -tions fitting on said rods,arms fixedly mounted on said trays'pivotally connected to the sides ofsaid casting, independently rotatable sheaves arranged in saidhead, in-

dependently rotatable sheaves arranged in said casting, and flexiblemeans adapted to cooperate with said sheaves to raise and lower saidcasting to close and open said trays, said casting being adapted toslide on said rods on the opening and closing of said trays;substantially as described.

18. A bucket of the kind described comprising a supporting-head providedwith an elongated opening diagonally disposed, a set of independentlyrotatable sheaves arranged in said opening, cooperating loadtrays, linkspivotally connected to said head and to said trays, rods depending inparallel relation from said head, a box-shaped frame provided withportions fitting on said rods, a set of independently rotatable sheavesarranged in said frame, said head-sheaves being diagonally arranged incooperative ver-' tical relation to said frame-sheaves, arms fixedlymounted on said trays pivotally connected to the sides of said frame,and flexible means adapted to cooperate with said sets of sheaves, saidframe being adapted to slide on said rods on the opening and closing ofsaid trays; substantially as described.

19. In a bucket, the combination with a supporting-head, of cooperatingload-trays adapted to open and close having pivotal connection with saidhead, sheaves rotatably mounted in said head, rods depending in parallelrelation from said head and having their lower ends free, a frame havingpivotal connection with said trays slidably mounted on said rods,sheaves rotatably mounted in said frame, and flexible means adapted tocooperate with said sets of sheaves to open and close said trays; sub,-stantially as described.

20. In a bucket, the combination with a supporting-head, of cooperatingload-trays adapted to open and close having pivotal connection with saidhead, sheaves rotatably mounted in said head, rods depending in parallelrelation from said head and having their lower ends free, a frame havingpivotal connection with said trays loosely arranged on said'rods andadapted to slide thereon on the opening and closing of said trays,sheaves rotatably mounted in said frame, flexible means adapted tocooperate with said sets of sheaves to open and close said trays, andmeans on the end of each of said rods adapted to limit the downwardmovement of said frame and its carried sheaves on the opening of saidtrays; substantially as described. i

21. In a bucket, the combination with a supporting-head, of cooperatingload-trays,

links pivotally connecting said trays to said head, sheaves rotatablymounted in said" head, rods depending in parallel relation from saidhead and having their lower ends free, a frame loosely arranged on saidrods and adapted to slide thereon on the opening and closing of saidtrays, arms fixedly mounted on said trays pivotally connected to saidframe, sheaves rotatably mounted in said frame, flexible means adaptedto cooperate with said sets of sheaves to open and close said trays, anda collar on each of said rods adapted to limit the downward movement ofsaid frame and its carried sheaves on the opening of said trays;substantially as described.

22. The combination with a supportingcable, of a bucket of the kinddescribed, the same comprising a supporting-head provided with anelongated opening, a supporting-sheave around which said cable isadapted to pass rotatably mounted in said opening, a set ofindependently rotatable tray-operating sheaves also mounted in saidopening, cooperating load-trays, links pivotally connected to said headand to said trays, rods depending in parallel relation from said head, abox-shaped frame provided with portions fitting on said rods, said framebeing adapted to slide on said rods on the opening and closing of saidtrays, a set of independentl rotatable tray-operating sheaves arrangedin said frame, arms on said trays pivotally connected to the sides ofsaid frame, and flexible means adapted to cooperate with saidtray-operating sheaves to open and close said trays; substantially asdescribed.

23. A bucket of the kind described comprising a supporting-head,coiiperating loadtrays, links pivotally connected to said head and tosaid trays, sheaves rotatably mounted in said head, guide-membersdepending from said head between said links, a sheave-frame pivotallyconnected to said trays and slidably movable on said guide-members belowsaid head, sheaves rotatably mounted in said frame, and flexible meansadapted to cooperate with said sheaves to open and close said trays;substantially as described.

24. A bucket of the kind described comprising a supporting-head,cooperating load trays, links pivotally connected to said head and tosaid trays, sheaves rotatably mounted in said head, a pair of parallelguide rods depending from said head between said links, a sheave-framepivotally connected to said trays and slidably movable on said rodsbelow said head, sheaves rotatably mounted in said frame, and flexiblemeans adapted to cooperate with said sheaves to open and close saidtrays; substantially as described.

25. A bucket of the kind described comprising a supporting-head,coperating load trays, links pivotally connected to said head and tosaid trays, rods depending from said head between said links, asheave-frame slidably arranged on said rods, arms fixedly connected tosaid trays and pivotally connected to said frame, sheaves rotatablymounted in said head, sheaves rotatably mounted in said frame,andfiexible means adapted to 006perate with said sheaves to open andclose said trays; substantially as described.

26. A bucket of the kind described comprising a supporting-head,cooperating loadtrays, links pivotally connected to said head and tosaid trays, rods depending from said head, a sheave-frame provided withportions fitting on said rods, arms fixedly connected to said trays andpivotally connected to the sides of said frame, sheaves rotatablymounted in said head, sheaves rotatably mounted in said frame, andflexible means adapted to cooperate with said head and frame sheaves toraise and lower said frame to close and open said trays, said framebeing adapted to slide on said rodson the opening and closing of saidtrays; substantially as described.

27. A bucket of the kind described comprising a supporting-head,coiiperating loadtrays, links pivotally connected to said head and tosaid trays, sheaves rotatably mounted in said head, guide-membersdepending from said head between said links, a box-shaped castingpivotally connected to said trays and having bored portions fitting onsaid guide members, sheaves rotatably mounted in said casting, andflexible means adapted to cooperate with said sheaves to raise and lowersaid casting to close and open said trays, said casting being adapted toslide on said guide-members below said head on the opening and'closingof said trays; substantially as described.

28. A bucket of the kind described comprising a supporting-head,cooperating loadtrays, links pivotally connected to said head and tosaid trays, sheaves rotatably mounted in said head, rods depending fromsaid head, a box-shaped casting having bored portions fitting on saidrods, arms fixedly connected to said trays and pivotally connected tosaid casting, sheaves rotatably mounted in said casting, and flexiblemeans adapted to cooperate with said sheaves to raise and lower saidcasting to close and open said trays, saidcasting being adapted to slideon said rods on the opening and closing of said trays; substantially asdescribed.

29. A bucket of the kind described com prising a supporting-head,provided centrally with a diagonallydisposed opening, a set of sheavesrotatably arranged in said opening, cotiperating load-trays,

links pivotally connected to said head at the ends thereof and to saidtrays, guide-members depending from said head, a sheaveframe providedwith portions fitting on said guide-member's, a set of sheaves rotatablymounted in said frame, said head-sheaves being diagonally disposed incooperative vertical relation to said frame-sheaves, arms mounted onsaid trays and pivotally connected to said frame, and flexible meansadapted to cooperate with said head and frame-sheaves to open and closesaid trays, said frame being adapted to slide on said guide-members onthe opening and closing of said trays; substantially as described.

80. A bucket of the kind described comprising a supporting-head providedcentrally with a diagonally-disposed opening, a set of sheaves rotatablyarranged in said opening, cooperating load-trays, links pivotallyconnected to said head at the ends thereof and to said trays, rodsdepending from said head between said links and'at opposite ends of saiddiagonally-disposed opening, a b0X-shaped sheave-frame provided withportions fitting on said rods, a set of sheaves rotatably mounted insaid frame, said head sheaves being diagonally disposed in cooperativevertical relation to said frame-sheaves, arms mounted on said trays andpivotally connected to said frame, and flexible means adapted tocooperate with said sets of sheaves to open and close said trays, saidframe being adapted to slide on said rods on the opening and closing ofsaid trays; substantially as described.

31. A bucket of the kind described comprising a supportinghead, sheavesrotatably mounted in said head, cooperating load trays, diverging pairsof links pivotally connected at their opposite ends to said head and tqsaid trays, guide-members depending from said head, a sheave-framehaving portions fitting on said guide-members, sheaves rotatably mountedin said frame, side arms rigidly secured to said trays and pivotallyconnected to said frame, brace-members connecting said arms, andflexible means adapted to cooperate with said headand framesheaves toopen and close said. trays, said frame being adapted to slide on saidguidemembers on the opening and closing of said trays; substantiallydescribed.

82. A bucket of the kind described comprising a supporting-head, sheavesrotatably mounted in said head, cooperating loadtrays, diverging pairsof links pivotally con nected at thei" opposite ends to said head and tosaid tra s, rods depending from said head and having their lower endsfree, a sheave-frame slidably mounted on said rods, sheaves rotatablymounted in said frame, arms rigidly secured to said trays and pivotallyconnected to said frame, brace-members connecting said arms, andflexible means adapted to cooperate with said head and frame sheaves toopen and close said trays, said frame being adapted to slide on saidrods on the opening and closing of said trays; substantially asdescribed.

83. The combination with a supportingcable, of a bucket of the kinddescribed, the same comprising a supporting-head provided centrally withan enlarged opening, a supporting-sheave around which said cable isadapted to pass rotatably mounted in said opening, tray-operatingsheaves also rotatably mounted in said opening, cotiperating load-trays,links pivotally connected to said head at the ends thereof and to saidtrays, rods depending in parallel relation from said head at oppositeends of said enlarged opening and between said links, a sheaveframehaving portions fitting on said rods, tray-operating sheaves rotatablymounted in said frame, arms on said trays pivotally connected to saidframe, and flexible means adapted to cooperatewith said tray-operatingsheaves to open and close said trays, said frame being adapted to slideon said rods on the opening and closing of said trays; substantially asdescribed.

at. The combination, in abucket of the kind described, with asupporting-head having an openin therein, of a sheave easing arrangedwithin said opening and secured to said head, bored walls dividing saidcasing and secured at their ends to the ends of said casing, a shaftmounted in said head and passing through said head, casing, and

walls, and sheaves rotatably mounted on said shaft within the divisionsformed by said walls; substantially as described.

35. lhe combination, in a bucket of the kind described, with asupporting-head having an opening therein, of a sheave casing arrangedwithin said opening and secured to said head, said casing comprisingside walls and intermediate walls, said side walls being bent atopposite ends and secured together and to said casing and saidintermediate walls dividing the space between said side wall and beingsecured at their ends to the bent ends of said side walls, a shaftmounted in said head and passing through said head and walls, andsheaves rotatably V mounted on said shaft within the divisions formed bysaid intermediate walls; substantially as described. I

36. The combination, in a bucket of the kind described, with asupporting-head having an opening therein, of a sheave casing arrangedwithin said opening and secured to said head, said casing comprisingside walls and intermediate walls, said intermediate walls dividing thespace between said side walls into central and outer divisions, a shaftmounted in said head and passing through said walls, a bucket-supportingsheave rotatably mounted on said shaft within said central division, andtray-open ating sheaves rotatably mounted on said shaft within saidouter divisions; substantially as described. I 37. The combination witha bucket of the kind described having a lower sheaveframe, of a sheavecasing arranged in and secured to said frame, said casing comprisingside walls, end walls, and intermediate walls, said side and end wallsbeing secured together and to said frame and said interdivisions formedby said intermediate Walls; mediate Walls dividing the spacebbetweensubstantially as described.

said side Walls into divisions and ein se- 1 1 curedat their ends tosaid end Walls, a shaft HERBERT A1 KINSON' mounted in said frame andpassing through Witnesses:

said side and intermediate WI11S,21Ild sheaves LAURA E. SMITH,

rotatably mounted on said shaft Within the J OHN K. MACDONALD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 1).. 0.

